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BER Performance of Frequency Domain Differential Demodulation OFDM in Flat Fading Channel
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作者 SONG Lijun TANG Youxi LI Shaoqian HUANG Shunji(National Key Laboratory of Communication,UESTC Chengdu 610054 China) 《Journal of Electronic Science and Technology of China》 2003年第1期32-36,共5页
A closed form expression for the bit error rate (BER) performance of frequency domaindifferential demodulation(FDDD) for orthogonal frequency division multiplexing system in flat fadingchannel is derived.The performan... A closed form expression for the bit error rate (BER) performance of frequency domaindifferential demodulation(FDDD) for orthogonal frequency division multiplexing system in flat fadingchannel is derived.The performance is evaluated by computer simulation and compared with the timedomain differential demodulation(TDDD).The results indicate that the performance of FDDD is betterthan that of TDDD,and the lower band of BER in the former is lower than that of the latter. 展开更多
关键词 orthogonal frequency division multiplexing bit error rate frequency domain differential demodulation Doppler shift
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New cooperative frequency domain differential modulation and demodulation 被引量:1
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作者 Ke Li Chunping Hou Yonghong Hou Jinlin Fu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第6期892-896,共5页
An innovative method of cooperative frequency domain differential modulation and demodulation is presented.This method applies the prior knowledge of channel propagation to selecting the variable differential length a... An innovative method of cooperative frequency domain differential modulation and demodulation is presented.This method applies the prior knowledge of channel propagation to selecting the variable differential length and carrying out frequency domain modulation.This strategy optimizes the design of system parameters to effectively improve the anti-interference ability of the differential system in time-varied multipath channel circumstance without making the execution more complicating.The simulations and comparisons demonstrate the proposed method is effective,and the results show that it is especially suitable for the fading channel with strong propagation and fast time-variation. 展开更多
关键词 frequency domain differential demodulation differential length cooperative frequency domain differential.
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